#!/bin/bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2023, OpenNebula Project, OpenNebula Systems                #
#                                                                            #
# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
# not use this file except in compliance with the License. You may obtain    #
# a copy of the License at                                                   #
#                                                                            #
# http://www.apache.org/licenses/LICENSE-2.0                                 #
#                                                                            #
# Unless required by applicable law or agreed to in writing, software        #
# distributed under the License is distributed on an "AS IS" BASIS,          #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
# See the License for the specific language governing permissions and        #
# limitations under the License.                                             #
#--------------------------------------------------------------------------- #

###############################################################################
# This script is used to copy a VM image (SRC) to the image repository as DST
# Several SRC types are supported
###############################################################################

# -------- Set up the environment to source common tools & conf ------------

if [ -z "${ONE_LOCATION}" ]; then
    LIB_LOCATION=/usr/lib/one
else
    LIB_LOCATION=$ONE_LOCATION/lib
fi

. $LIB_LOCATION/sh/scripts_common.sh

DRIVER_PATH=$(dirname $0)
source ${DRIVER_PATH}/../libfs.sh

# -------- Get cp and datastore arguments from OpenNebula core ------------

DRV_ACTION=`cat -`
ID=$1

XPATH="${DRIVER_PATH}/../xpath.rb -b $DRV_ACTION"

unset i XPATH_ELEMENTS

while IFS= read -r -d '' element; do
    XPATH_ELEMENTS[i++]="$element"
done < <($XPATH     /DS_DRIVER_ACTION_DATA/DATASTORE/BASE_PATH \
                    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/BRIDGE_LIST \
                    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/DRIVER \
                    /DS_DRIVER_ACTION_DATA/IMAGE/PATH)

unset i

BASE_PATH="${XPATH_ELEMENTS[i++]}"
BRIDGE_LIST="${XPATH_ELEMENTS[i++]}"
DRIVER="${XPATH_ELEMENTS[i++]}"
SRC="${XPATH_ELEMENTS[i++]}"

set_up_datastore "$BASE_PATH" "$RESTRICTED_DIRS" "$SAFE_DIRS"

DST=`generate_image_path`

# ------------ Check if format conversion is required -------------

if [ "$DRIVER" = 'qcow2' ] || [ "$DRIVER" = 'raw' ]; then
    CP_CMD="$QEMU_IMG convert -O $DRIVER $SRC $DST"
else
    CP_CMD="cp -f $SRC $DST"
fi

# ------------ Copy the image to the repository -------------

if [ -n "$BRIDGE_LIST" ]; then
    log "Copying remotely local image $SRC to the image repository"
    DST_HOST=`get_destination_host $ID`

    CMD=$(cat <<EOF
        set -e -o pipefail
        mkdir -p $BASE_PATH
        $CP_CMD
EOF
)

    ssh_exec_and_log "$DST_HOST" "${CMD}" "Error copying $SRC to $DST in $DST_HOST"
else
    log "Copying local image $SRC to the image repository"
    mkdir -p "$BASE_PATH"
    exec_and_log "$CP_CMD" "Error copying $SRC to $DST"
fi

echo "$DST $DRIVER"
